The Imperial SO (Sub Only) plans are nearing completion. I should have them available on the site within a weeks time if all goes well. I have also been modeling various drivers that should work well in this design. Those will be posted here as well as be included in the plans.

[quote author=Steve Deckert link=1130446667/0#0 date=1130443067]The Imperial SO (Sub Only) plans are nearing completion. I should have them available on the site within a weeks time if all goes well. I have also been modeling various drivers that should work well in this design. Those will be posted here as well as be included in the plans.

[/quote]

I am still interested to no end about the type of driver, Just want to see how close I was.

The best part of all this is we can all stop guessing and stop the fallout from the speculation.

i am enthralled by the beauty of the beast... nay, i am in fear. This is without a doubt the most serious bass maker I have ever seen, short of adire audio's experimental parthenon driver, but thats in a class by itself i think (120db@7((yes seven))hz OB!).

oh if only i had a garage, or somewhere to put them once i was finished...

Steve is such a nice guy for posting those preliminary plans for us fanboys, that sort of thing ensures brand loyalty, at least for me anyways.

after gazing for awhile, it looks to me that the sealed chamber behind the driver is surrounded by dead space, does this mean that one could adjust the volume of that space to accomodate different drivers? That would make this enclosure very adaptable to almost any driver. I see why Steve said that this might fly in the face of conventional design, i could experiment with this thing for years...

Steve, could this be revised to accomodate a set of four 10" drivers? it would probably result in an increase in SQ since the motors wouldnt have to work so hard to move that big cone AND the horn too. Four motors are better than one, right? just a little brainstorm.

how many sheets are we talking about here, looks like about 5 apiece, this is something i would build in i think. someone here ordered ziggy Imps, i wonder what the shipping difference would be?

The football shape exists for proper clearance at the top edge of the woofer. It also acts as a pre-compression chamber that sets the stage for a good launch of pressure towards the throat of the horn. I could have built the cabinet to where the woofer wouldn't have had clearance issues, but my main concern was balancing and controlling the pressures in front of the cone.

Using anything other then the single 15 inch driver would require a complete re-design of this removable front section and likely create significantly more problems then anything else.

the cabinet itself is designed to cut out high frequency reproduction in the horn. The horn itself is a hard thing for the driver to load, so a coax would likely be a waste of time, especially when you consider the amount of air redirected by the front panel, at best it would be very beamy.

I like to think back to all the great Christmas presents from when you were a kid. I am sorry but it doesn't get much better then Christmas as a kid. Getting presents, rule!

Anyways you take that feeling of anticipation and it is like you are excited because you know you are getting something from Decware. Doesn't matter what. It is from decware so you know it will be good.

She doesn't tell what it is though! :D

It is the full size blueprint plans for an Imperial SO. You are either exstatic if you really get it or you are curious.Then you build one and when you adjust the volume on your bass amp driving it for the very first time the real meaning of that gift from Decware comes through. You have never loved your wife more! Yup... this is definately a gift that keeps on giving.

A) 3.xx inchesB) The curve is x X y inches, we usually plot the points and then bend a thin strip of wood to create the arc and trace it with a pencil. The distance is the same at all the ends, xx inches.C) Plans will be available in the future.

I've downloaded the plans from the site. My rendition, from the picture at the beginning of this thread, was scarily close.

EDIT-Scarily, per bassboy. Yeah, it checks out at dictionary.com. Unfortunately, scaringly does not. I could have sworn that was a word.

EDIT(again)- I don't care what you call me. My name is Leland. I've been called Lee(most often ), Kiddo(family ), Neo(wore a trenchcoat to school after Columbine, just to see what the staff would do ), Jet-Lee(friends, for my extensive martial arts background ), Ben(more friends, because they thought Leland sounded weird ), and Redneck(friends, because I've always been the redneck looking/acting/engineering one in the group, then I moved to Arkansas ).

[quote author=bassboy link=1130446667/15#20 date=1149626356]You were trying to figure it out without plans?

Of all the designs available here, that is the LAST one I would try to duplicate without plans. The original 1956 plans might get you close, but I'm guessing not nearly close enough. [/quote]Yes, it's pretty complex task to duplicate without plans so I do it WITH plans. I'm drawing the speaker in 3D in SolidWorks to get more detailed plans. Furthermore I need to translate inches to metric as I'm living in Europe. ???I'll send my work to Steve for free.

Well, what you can do in SolidWorks (one of my side jobs is 75% SolidWorks, 25%AutoCAD), is design it in SolidWorks all in inches, then change the setting to metric and rebuild it. It converts all the measurements right there on the spot for you. Really awesome when you have it drawn out in the drawings.

[quote author=Lee in Arkansas link=1130446667/15#27 date=1149650188]Well, what you can do in SolidWorks (one of my side jobs is 75% SolidWorks, 25%AutoCAD), is design it in SolidWorks all in inches, then change the setting to metric and rebuild it. It converts all the measurements right there on the spot for you. Really awesome when you have it drawn out in the drawings.

BTW-I love this program. [/quote]Exactly what I'm doing.

It's pretty hard to get plywood in Europe 0.75" thick so I also need to change thickness (20 mm ~ 0,787").

Hey Jet/lee whatever.As you get older you take a little ribbing with a little more grace.I am kinda old, likely over twice your age and you would never know it to meet me. You got nothing to prove to me. If I correct your spelling feel free to get me back.You can go all bruce lee or all Mr engineer on me,but your just a fella called jet to me we are all in the same game.

My SO guess was also close enough to work as well and it used the corner horn dimensions.

Just a twist on an oooold gem I know. The way I heard it, the guy knows what he's getting but can't afford better. He's so happy with the results that he promises to return when he has more money. Her reply is, "I'll keep an eye out for you".